Sarah Fisher

Sarah Fisher is a Venture Partner at Nina Capital in San Francisco, California, where she focuses on sourcing and evaluating early-stage investments in deep tech and climate tech. Before joining the firm in early 2025, she served as a Partner at NFX and held other venture capital investment roles following an early career in product management. Her investment portfolio includes defense and manufacturing technology companies such as Saronic and Hadrian, and she recently participated in a $30 million Series A funding round for an undisclosed climate tech startup in the third quarter of 2025. The Stanford University graduate maintains an active industry presence, reaching over 5,000 followers online and speaking on artificial intelligence investment trends at major technology conferences. Fisher currently leverages her operational and investment experience to scale early-stage enterprise software, artificial intelligence, and sustainability startups.